title: Diurnal variations of plasma FSH, LH, and testosterone in male ring doves kept under different photoperiods.
mesh_terms: D000818:Animals; D001717:Birds / Q000502:physiology*; D002940:Circadian Rhythm; D005640:Follicle Stimulating Hormone / Q000097:blood*; D008027:Light; D007986:Luteinizing Hormone / Q000097:blood*; D008297:Male; D013739:Testosterone / Q000097:blood*; D013997:Time Factors
chemical_list: D013739:Testosterone; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone